div {
		height: 65px;
		width: 633px;
		margin: 300px auto;
}

div ul li {
			list-style: none;
			float: left;
			border: 1px solid #e6e6e6;
			width: 30px;
			height: 30px;
			text-align: center;
			line-height: 30px;
			margin-left: 5px;
			color: rgba(0,0,0,0.5)
}

.a {
		border: none;
}

.a1 {
		width: 70px;
}

.a2 {
		width: 50px
}